Before you call an HVAC technician, make sure the filter is clean and, in the case of an AC… Why Isn’t My AC Reaching the Number on the Thermostat? A furnace “short cycles” when it turns off before reaching the desired temperature. Replaced with new one, supposed to be for a 5 wire system. That takes time. I never had the issue until recently around Aug 31st all of this started happening. There are a number of reasons why a thermostat wouldn’t be reaching the set temperature. Throw some shade – shade your windows, especially on the sides of your home which receive the most sunshine. The problem is more likely that the air conditioner is too small to cool the room/house or you are trying to get the room/house colder than what the air conditioner can bring the temperature down to. Archived. Share it! If you’re dealing with an AC that doesn’t seem to be cooling your home, there could be many culprits. If it’s not the air filter, then check the air ducts. Both the thermostat sensor and the extra sensor it came with register anywhere from about 74.5 to about 77 all day and the AC is actually running from about 12:30-1:00 PM until about 10:30 or 11:00 PM continuously. I have even changed my device to ECO and set 68/80. But if your thermostat is not holding temperature then your home will feel cooler than it should. You'll also want to make sure you're not opening the door too often or leaving it open for too long. In fact, it seems your AC has trouble hitting any temperature below 80 degrees. But it isn’t here. 3. The thermostat may lose its power Another problem which may cause your thermostat not reaching set temperature is that maybe your thermostat lost its power. When you’d rather leave AC repairs to the professionals, Climate Design is here. Within 10-15 minutes, the thermostat read 72, but the pump remained on for several hours. Don't know, let my set it for that temperature to see what happens. Fixes. If your AC system is unable to reach and maintain the set temperature on hot days, especially if it’s running continuously, the culprit may be an undersized AC unit. If your heat pump is reaching the temperature you set but it doesn’t feel warm, your body is tricking you (your heat pump is actually working just fine)! Hello Reddit techs. Luckily, blocked ducts are usually something you can fix yourself. When in the off position, AC or heat will turn off, but fan continues to run. Ensure there is nothing impeding airflow around your furnace, within your furnace and through your ducts. And you’re getting a little hot and bothered (literally). Now, if it isn’t extremely cold out (above 35 degrees), and your heat pump does not reach temperature set on your thermostat, this could indicate a … The AC cools wonderfully, but just won't shut off. HVAC Continues to Run Even After Reaching Set Temperature. So what’s the issue? Solution: When this occurs, you should try rebooting the thermostat. Keep it clean – annual maintenance and clean filters go a LONG way towards the efficiency of your AC. Our AC Repair Guide shows that replacing a thermostat will cost anything from $75 to $575 for one hour of labor plus the thermostat and depending on the thermostat type and company you choose. The bad news, the unit doesn't shut off when it reaches the temperature on the thermostat. My ac is cycling off before reaching the desired temp. If your air conditioner won’t shut off, you may have a defective temperature sensor. The house is 1900sqf (basment+main) and the unit is 1.5 ton (18000BTU) I should be OK by my calculations) Well, certain problems can prevent an air conditioner from properly cooling down your home including: … My wife and I woke up this morning absolutely freezing. Not the displayed set temperature of 75 degrees. We can help. But it isn’t here. Surf the web – the U.S. Department of Energy has. So, if it is very cold outside and your heat pump does not reach temperature set on your thermostat, you might have to raise your thermostat a few degrees to maintain it. I do not have any auto-schedule and I turned off everything that could affect the drastic change in temperature. Hang it out to dry – operate your clothes dryer less, especially during the hottest parts of the day, and save more energy by hanging your clothes on a line to dry. You have some place where outside air is coming into the space and your unit is having to cool it as well as your home. However, if your AC runs constantly without reaching the set temperature, something is wrong. The good news is, my A/C is working and blowing lots of cool air. Recalibration works differently for a programmable mechanical thermostat. Does your AC never cool your home? If it’s not the air ducts, then check the outdoor unit. If it is, there’s a good chance … If it’s not the thermostat, then check the power. Diagnose & fix heat that won't turn off when it should: here we discuss various causes of too much heat or of a heating system that does not shut off whenit should. If one or more of your air ducts are blocked, your system won’t be able to heat or cool your home efficiently. What’s going on? The temperature spread is so that you can set the thermometer on automatic and the drift in temp doesn't cause the heat to go on, then the AC to go on, then the heat to go on, etc. 1. Why Isn’t My AC Reaching the Number on the Thermostat? Will turn on the AC and heat, but won't turn it off when it reaches the set temperature. If your AC still isn’t cooling your home, you may need to contact your local professionals at Climate Design. This is a very common furnace problem, and can be very frustrating if you are trying to maintain a comfortable indoor environment at just the temperature you like. In fact, it may not even require the assistance of an HVAC technician. Fan still blowing after a few minutes? I'm getting very annoyed that I'm about to uninstall the device. The issue may be with the furnace itself, but it also may come from a number of other sources. Get more answers from the people in your networks . If your thermostat is not working correctly, the unit doesn’t know to turn off even when the temperature is reached. Set it and forget it – get a programmable thermostat to optimize cooling times. Thermostat Temperature Set Too High or Too Low If you are having an issue with your AC and need help immediately, contact us today! If your furnace is not keeping your house at the temperature to which you set it, then you have a problem somewhere in your heating system. Old Thermostat in house that had been vacant for years the batteries corroded inside. Please turn it off for several seconds, wait, and then switch on to see what happens. For example, food may not cook well, or it may take a long time for the oven to reach the set temperature. If you find one that isn’t, remove the obstruction and airflow should resume normally. The fan is on and if there is any ice build up I should continue feel colder air when the AC is switched off by the thermostat but that is not happening. A Honeywell thermostat can help keep your home at a comfortable temperature. What to do for a Thermostat Not Reaching Set Temperature Are you have problems with your thermostat not reaching set temperature? One of the most neglected parts of your HVAC system is the outdoor unit, but keeping a clean outdoor condenser is just as important as keeping the indoor filter clean. Since getting it installed I've noticed that although my setpoint is set at 74, the house stays >74 all day until the outside temperature drops quite a bit. 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